DevToolBox免费
博客

密码生成器 - 在线创建强安全随机密码

免费在线密码生成器。自定义长度(8-64位)和字符类型,生成强安全随机密码。支持批量生成,一键复制。

16

点击「生成密码」按钮创建安全密码

关于密码安全

强密码应至少包含12个字符,并混合使用大写字母、小写字母、数字和特殊符号。本生成器使用 Web Crypto API (crypto.getRandomValues) 提供加密级安全的随机数生成,确保密码的最高安全性。

Frequently Asked Questions

How long should passwords be?
Security experts recommend at least 12-16 characters for strong passwords. This tool defaults to 16 characters, which provides excellent protection. Longer passwords (20+ characters) are even better, but consider usability. The password strength indicator will show you how strong your generated passwords are.
Do I need special characters?
Special characters (!@#$%^&*) add complexity and significantly increase entropy. Many systems require them. This tool includes them by default, but you can disable them if a service doesn't support special characters. Generally, keep them enabled for maximum security.
Should I use a password manager?
Absolutely. Password managers securely store and auto-fill strong passwords, so you don't have to remember them. This is the best practice for managing multiple accounts. Use a tool like this generator to create strong passwords, then let your password manager store them.
What is password entropy?
Entropy measures randomness and password strength. More character types (uppercase, lowercase, numbers, symbols) and longer passwords increase entropy. For example, a 12-character password with all four character types has much higher entropy than a 12-character lowercase-only password, making it harder to crack.
𝕏 Twitterin LinkedIn

评价此工具

3.7 / 5 · 208 人评价

保持更新

获取每周开发技巧和新工具通知。

无垃圾邮件,随时退订。

Enjoy these free tools?

Buy Me a Coffee

使用方法

  1. 设置密码长度(推荐16位以上)
  2. 选择字符类型:大写、小写、数字、特殊符号
  3. 设置要生成的密码数量
  4. 点击「生成密码」按钮,复制您需要的密码

常见用途

  • 为新账户创建强密码
  • 生成 API 密钥和密钥
  • 创建临时访问码
  • 为应用程序生成安全令牌

常见问题

生成的密码是真正随机的吗?
是的。本工具使用 Web Crypto API (crypto.getRandomValues),提供加密级安全的随机值,确保密码的随机性和不可预测性。
什么样的密码才算强密码?
强密码应至少12个字符长,混合使用大写、小写、数字和特殊符号,避免使用字典单词、常见短语或个人相关信息。
我的密码会被存储吗?
不会。密码完全在您的浏览器中生成,不会发送到任何服务器。我们不会记录或存储任何生成的密码。